Ecological Pyramids

All food webs and food chains begin with _________________.

• primary consumer
• producers
• secondary consumers
• predators

In this energy pyramid, which organisms have the most energy available?

• Producers
• Carnivores
• Herbivores
• Top Predator

How much of the energy in each level of a ecological pyramid gets lost as heat or used by the organism so that it cannot be passed on to the next trophic level?

• 80%
• 90%
• 10%
• 20%

In this ecological pyramid which type of consumer gets only 10% of the energy stored in plants?

• Herbivore
• Carnivore
• Omnivore
• Secondary Consumer

This diagram shows the amount of energy that moves from one feeding level to another.

• Energy Pyramid
• Food Web
• Ecosystem
• Food Chain

The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain organisms that do photosynthesis?

• A
• B
• C
• D

A tertiary consumer has to be which type?

• Carnivore.
• Decomposer.
• Producer.
• Herbivore.

The number of organisms _________ with each successive (higher) trophic level. 

• increases
• decreases

Which of the following shows the correct pyramid of biomass for the food chain?

• A
• B

Which organism recieves the least amount of energy from the producer?

• Owl
• Grasshopper
• Lilypad
• Mouse